Adjustable socket-wrench.



E. E. KLANKE.

ADJUSTABLE SOCKET WRENCH.

APPLICATION FILED MAR.17.191E.

Patented Nov. 14, 1916 adjustable to fit various sizes oi nuts, and has for a further object to simplify the con- EL'MER E. KLANKE, OF MUSKOGEE, OKLAHOMA.

ADJUSTABLE SOCKET-WRENCH.

Application filed Marchqfi, 1916.

To all whom it may concern:

Be it known that I, ELMER E. KLANKE, a citizen of the United States, residing at Muskogee in the county of Muskogee and State of Oklahoma, have invented certain new and useful Improvements in Adjustable Socketrenches, of which the following is a specification.

The invention has for an objectto provide a novel and desirable form of socket wrench,

struction of adjustable wrenches of this kind both as to construction and manner of manipulation.

It is an important aim of my invention to give a simple construction in such wrenches whereby ation of the handle device will autom tically tighten the wrench upon the nut, either in screwing or. unscrewing the nut.

' It is a further important aim to provide a wrench of this character in which the interior will be open for a considerable distance from ,the jaws or nut engaging portions, so that it may be used over spark plugs.

Another important object is to give a device of this character which may be manufactu'red from flat sheet metal blanks, permitting its production by simple stamping operations.

Additional objects, advan es and features of invention will appear mm the construction, arrangement and combination of parts hereinafter described and shown in the drawings; wliere-- Figure 1 is a side elevation of the device, Fig. 2 is a similar view at right angles to Fig. 1, Fig. 3 is a cross section of the device on the line 3 3 of Fig. 1, Fig. 4 is a plan View of the blank for one of the jaws, Fig. 5 is adetail perspective view of the handle or adjusting lever.

There is illustrated a wrench comprising two pivoted jaws and 11, of similar form, except that one is formed from a blank slightly broader than the other. Each comprises 'an upper art 12, quite broad and having parallel e ges 13 at the sides, and a lower nut engaging portion 14, of less width, and slightly tapered toward the outer end, as at 15. Closely adjacent the edges 13 each of the jaws is formed with pivot openings 16, and near the top notches 17 are formed, extending inwardly from the edges 13 transversely of the blank to a distance Specification of Letters Patent.

Patented Nov. 14., 1916.

Serial No. 84,837.

slightly greater than the distance of the opening 16 from the edge. Each of the sections is bent into semi-cylindrical form in its upper intermediate portion, the edge portions being extended in parallel relation for a short distance. The jaw 11 has its side portions spaced closer together than the side portions of the jaw 10, so that the one may be inserted within the other. The lower portions 14 are pressed to form flat nut engaging portions disposed at the desired angle to engage the faces of a nut. The openings 16 being located immediately ad jacent the inclined edges 15, suitable pivots 18 being engaged through the openings 16 at each side, the jaws may have relative movement for closing upon a nut, as will be appreciated. \Vhen the jaws are in parallel relation, as shown in Fig. 1, the notches 17 of the opposed jaws are registered with each other and provide aclearway through which the operating handle or lever 20 may be inserted. This lever is gradually tapered, so that the small en is adapted to just engage through the registered notches 17 at both sides of the device, projecting slightly at its smaller end.

The device is preferably made of a size to snugly engage the largest nut for which it is intended when the jaws are in parallel relation as shown in Fig. 1, although this is not absolutely essential. and it is possible to use the device on larger nuts as will be apparent from the following explanation of its use.

In use of the device, the lever 20 being withdrawn from between the jaws the upper parts'of the jaws are pressed inwardly so as to permit the lowerparts of the jaws to-be easily presented around the nut, after which the small end of the lever 20 is introduced in the notches 17 at one side and forced inwardly until it projects through the notch at the opposite side, this movement being continued until the lever wedges between the two jaws, after which the lever may be used as a handle to turn the wrench, the leverage exerted between the jaws serving to tighten them further upon the nut.

Thus it is not necessary to drive the lever 20 into place, although this may be done if desired to secure the device firmly upon the nut.

It is an important advantage of the de vice that the length of the lever will be propoitionate to the size of the nut engaged,

it being possible to force the lever inward farther when the device is engaging a small nut than is possible. when it is engaging a. large nut. The necessary increased l(3\'0l age for turning larger nuts with each is thus gained automatically, while at the seine time when small nuts are being turned the lever is not awkward to handle.

In the drawings a spark plug 19 is illnetrated, the porcelain insulated post idl nf which extends u iiwardlv within the wrench as shown in Fig. 1. This is an advantage resulting from the use of individual pivot elements 18 at each side of the wrench.

it is evident that. the manufacture of the Wrench is attended with a minimum of dif} ficnlty and expense, the operations involved being quite simple, and the operations re quired in its assembly are few and simple.

The wrench may be rapidly adjusted upon work, and its use is attended, with a minimum liability of distorting the nut.

\Vhat is claimed:

1. A wrench comprising pivoted jaws, and a tapered lever element the jaws having m'it engaging portions at one end and being con structed for engagement of the lever slid ably and transversely therebetween.

Copies of this patent may be obtained for five cents each, by addressing the 2. A wrench comprising two jaws cpntrally and pivotally connected, said jaws having ends cmistrueted for engagement with the sides of a nut, and being notched on edges adjacent their other ends, and a tapered lever constructed for slidable engagement transversely between the jaws in said notches.

ii. A wrench comprising two jaw elements eat'h stamped integrall} from fiat sheet metal having parts cut away at each side and shaped for engagement with adjacent faces of a nut on one end, the remaining end portion there adjacent being formed with pivot openings at each side adjacent the cut away parts, said jaws being bent into partly cylindrical form and positioned in opposed relation with their edges overlapped, pivot means engaged through said openings, the ends of the jaws opposite those shaped to engage a nut being constructed for insertion of a lever therebetween.

In testimony whereof I have afiixed my signature in presence of two witnesses.

ELMER E. KLANKE. \Vitnesses:

E. A. GIBSON, A. W. LAWRENCE.

"Commissioner of Patents,

Washington, 17. q. 

